#!/usr/bin/python2.7 -u

import RPi.GPIO as GPIO
import time
import subprocess
import sys

fanstatus = "Off"

# Use GPIO 18
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(18,GPIO.OUT)

# Infinite Loop
while True:
	# Get the RasPi's CPU Temp
	temp = subprocess.Popen(["/usr/local/bin/cputemp","temp"], stdout=subprocess.PIPE).communicate()[0].replace("C\n","")
	# Default to verbose
	service = False

	# Start to cool at 43C
	if float(temp) > 43.0 and fanstatus == "Off":
		fanstatus = "On"
		GPIO.output(18,GPIO.HIGH)
	
	# Cool until we reach 38C
	if float(temp) < 38.0 and fanstatus == "On":
		fanstatus = "Off"
		GPIO.output(18,GPIO.LOW)

	# Be silent if we are starting at boot
	for arg in sys.argv:
		if arg == "service":
			service = True

	if service == False:
		# Get the current date
		date = subprocess.Popen(["/bin/date"], stdout=subprocess.PIPE).communicate()[0].replace("\n","")
		sys.stdout.write('\rTemp: '+temp+'C, Fan: '+fanstatus+' (at '+date+')      \b\b\b\b\b\b')

	# Sleep for a bit so we aren't a cpu hog
	time.sleep(6)